ATIS 1000621.1992(R2009)

Integrated Services Digital Network (ISDN) - User-to-User Signaling Supplementary Service (formerly T1.621-1992 (R2009) )

The Alliance for Telecommunications Industry Solutions, 09/01/1992

Publisher: ATIS

File Format: PDF

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Description

Published:01/09/1992

This standard is one of a series which defines and describes service capabilities within the context of an Integrated Service Digital Network (ISDN). It describes a single service capability which is a telecommunication transport capability. Such capability may be made available on a demand or a subscription arrangement.